Machine foe shaping and riveting spiral pipe



' (No ModeL) 3 Sheets-Shegt 1 J. B. ROOT. MACHINE POP. SHAPING AND RIVETING SPIRAL PIPE. 7 No. 283,923. Patented Aug. Z 8, 1883..

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J. B. ROOT.

MACHINE FOR SHAPING AND RIVBTING SPIRAL PIPE. No. 283,923. Patented Aug. 28, 883.

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(No Model.) 3 Sheets-Sheet 3.

J. B. ROOT. MACHINE POE SHAPING AND BIVETING SPIRAL PIPE.

No. 283,923. Patented Aug WITNESSES: INVENTEIH. v

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, U ITED STATES PATENT OF ICE.

J OH B. ROOT, OF PORT CHESTER, NEW YORK.

MACHINE FOR SHAPING AND RI VE'TING SPIRAL PIPE.

SPECIFICATION forming part of Letters Patent No. 283,923, dated August 28, 1883.

Application filed May 3, 1883. (No model.)

To all whom it may concern..-

Be it known that 1, JOHN B. Roor, of Port Chester, in the county of Westchester and State of New York, have invented certain new and useful Improvements in Spiral-Pipe Shaping and Riveting Machines and I hereby declare the following to be a clear, full, andexact description,which will enable a person skilled in the art to make and use the same.

The features of improvement. are, first, an inner seaming or riveting roll geared to a shaft which lies along the axis of the mandrel or the finished pipe; second, connections arranged to unite the inner and outer seaming, heading, or riveting rolls and transmit to them a positive motion capable of giving them the same relative speed third, a device for forcing the overlapping edge of the blank in contact with the under edge before the heading-rolls are reached, and thereby causethe rivets previously inserted in the under edge to pierce the overlapping edge in advance of the headin g operation; fourth, feed-rolls so constructed and combined with an airexhaust pump as to pick up and insert rivets in the blank as it passes to the winding-mandrel; and, fifth, devices for arranging and feeding the rivets to the feed-rolls.

In the drawings, Figure 1 represents a plan view of a machine embodying my improvements. Fig. 2 is aside viewof the same. Fig. 3 is an enlarged view of the feed-rolls and the connected rivet arranging and feeding mechanism. Fig. 4 is a detail sectional view of the feed-roll. Fig. 5 is a detail sectional view of the rivet-drum. Figs. 6 and 7 are detail views of the seaming or heading rolls. Figs. 8 and 9 are a face view of the inner heading-roll and an end view of the gearing on the shaft with which it meshes, and Figs. 10 and 11 are detail views of the tucker.

Referring to these views more in detail, A represents the bed of the machine, supported upon standards A A.

B is the outer seaming or heading roll. It is carried upon the shaft B,which is arranged in suitable bearings in the standard 13*, rising from the bed of the machine.

0 C are the feed-rolls, also arranged in bearings rising from the bed A, which direct the blank to the winding and riveting mechanism and keep it at a proper tension.

D is a plate lying upon the bed A, and arranged to-swing on an axis, D, being held in any desired position by a set-screw, D traveling in a slot, D in the bed of the machine. This plate carries the pipe-guide E, the severing-saw F, with its driving shaft F, the shaping-mandrel G, and former H, and is made adjustable relative to the direction of the path of the blank for giving the mandrel the different inclinations required when working blanks of various widths. -These are common and well-known features of machines of this class, and hence do not call for further description.

Extending through an axial hole in the man drel G, Figs. 1 and 7, is ashaft, I, which bears upon its inner end a spherical head, I, which constitutes a bearing for the inner seaming or heading roll, J. This head is fitted with teeth I, arranged in a plane perpendicular to the axis of the shaft I, and the roll J is provided with a gear, J, which meshes with the teeth I when these parts are in place. The roll J lies against the beveled face or end of the mandrel G, and in substantially the same plane as the upper heading-roll and the inner or overlapping edge of the blank, and, though inclined ing such that the peripheral speed of both riv eting-rolls is the same, and such that they act conjointly to grasp and draw the blank forward.

Fastened to the table K, Figs. 1, 4, and 10, over which the blank travels from the guiderolls 0 O to the shaping-mandrel, (or to any other appropriate support,) is a device, 'L, which I designate as a tucker. The office of this tucker is to depress the overlapping edge of the blank from its general course just before it reaches the bearing-point of theheading-rolls, and by forcing it down upon the rivets which have been inserted in the under edge of the blank, and the points of which, by a turn in the wound blank, are now brought in The feed or guide rolls 0 O are mounted as is usual in such machines, and are arranged, if desired, to give the edges of the blank any desired shape, or to otherwise prepare the blank for winding. The shaft 0 of the lower roll is provided with an air-chamber, G which connects with an exhaust-pump, M, through the pipe M, and the roll is provided with radial air-duets O, which successively .cominunicate during a quarter-revolution of the roll with a du ct leading'from said air-chamber C to the surface of the axis 0 P is a rivet-carrier, arranged to deliver rivets to the under roll, 0, at a point below the path of the blank, the flat portion of the heads of the rivets being brought into or nearly into contact with the surface of the roll, and in the same plane with the radial air ducts-0*.

The exhaust-pump operates to produce a partial vacuum in the air-chamber C, so that as one of the air-ducts 0* comes opposite the head of the rivet in the carrier P, and at the same time communicates with the air-chamber O", the tendency of the air to rush inwardly through said duct causes the rivet to be sucked upon the month of the duct, where it is held by atmospheric pressure, and, as the roll revolves, is brought under and forced through the blank feeding through the .rolls. The upper roll is slotted to allow the rivetshanks to pass without being upset. As the rivets thus picked up arrive on top of the roll 0 the ducts which they close pass beyond the inner air-chamber, and the pressure of the air is no longer exerted upon the rivets, and they.

are freeto feed forward with the blank in which they have been inserted.

Q, is a rivet-drum arranged upon an axis, Q, which is provided with a driving-pulley, Q", connected with any convenient driving mechanism. This drum is intended to contain a quantity of rivets in a loose condition. It is pierced with holes Q of a size that will admit the shanks, but not the heads, of the rivets, and as it revolves the rivets are tumbled about, and their shanks caused to enter the holes Q. As the rivets are thus caught and carried around by the drum they pass under the shield It, which is arranged to hold them in place until they have been inverted or are in a position to assume their proper arrangement in the carrier P, which is connected withthe end of the shield R, and arranged to catch the rivets as they drop, head downward,

from the holes in the drum as they pass the end 'of the shield.

Vhat is claimed as new is 1. In a spiral-pipe machine, the combination of an interior and an exterior seaming or riveting roll, and connections uniting such rolls, and arranged to give them positive motion at the same peripheral speed, substantially as described.

2. In combination with the shaping and riveting mechanism of a spiral-pipe machine, means for bringing the overlapping and under edges of the blank together before the head ing-rolls are reached for the purpose of forcing the rivets in the under edge through the overlapping edge before they are acted upon by the heading-rolls.

3. In combination with the shaping and riveting mechanism of a spiralpipe machine, feed-rolls constructed and arranged to insert rivets in the passing blank. I

4. In a spiral-pipe forming and riveting machine, a feed-roll constructed with an interior air-space having radial air-ducts leading to the surface of the roll, and an exhaust pump arranged to withdraw air from the airspace of said roll, as and for the purpose set forth.

-5.. In a spiral-pipe forming and rivetin f arranged to deliver rivets to such feed-roll,

substantially as described.

, JOHN B. ROOT.

Vitnesses:

V. F. HAPGOOD, Boer. F. GAYLORD. 

